Fish tank



FIG. 1 is a top perspective view of the fish tank of the presentinvention;

FIG. 2 is a bottom perspective view of the fish tank of the presentinvention;

FIG. 3 is a top plan view of the fish tank of the present invention;

FIG. 4 is side view of the fish tank of the present invention, the othersides being identical; and,

FIG. 5 is a bottom plan view of the fish tank of the present invention.

CLAIM The ornamental design for a fish tank, as shown and described.